Method and apparatus for forming a cloth selvage



April 3, 1956 R. D. WOOD, JR, ETAL METHOD AND APPARATUS FOR FORMING A CLOTH SELVAGE 1.9 Sheets-Sheet 1 Filed June 27, 1952 April 3, 1956 R. D. wooo, JR., EIAL 2,740,457

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METHOD AND APPARATUS FOR FORMING A CLOTH SELVAGE Filed June 27, 1952 3.9 Sheets-Sheet l5 INVENTOR (3 FMMW April 3, 1956 R. D. WOOD, JR, ETAL 2,740,457

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METHOD AND APPARATUS FOR FORMING A CLOTH SELVAGE Filed June 2'7. 1952 1.9 Sheets-Sheet l9 //V V E N TOPS 7?:4Aa4d, O Muir/f.

United tates METHOD AND APPARATUS FOR FORMWG A CLOTH SELVAGE Application lune 27, 1952, Serial No. 297,736

32 Claims. (Cl. 154-13) This invention relates in general to improved methods and apparatus for cutting textile cloth sheet material and at the same time securing the cut fiber ends so as to provide one or more selvages at the points of cutting. The term selvage as hereinafter employed in the specification is intended to define and includesheet material woven or otherwise and having one or more edges extending longitudinally or transversely thereof, which edges are so formed as to prevent ravelling, roughening, or fraying.

The conventional procedure of sewing or stitching hems along'the cut edge of the sheet material ordinarily involves separate handling operations which add to the cost of certain types of specialty cloth items, such as diapers, towels, mechanics wipe-up cloths, and the like, especially where it is desired to cut ofi lengths of cloth from a web of sheet material in a continuous operation.

To avoid stitching, many proposals have been made for securing together the folded portions of a hem by means of an adhesive type binder employed either as a coating or impregnating agent, or utilized in the form of fusible fibers interwoven with the strands of the material itself. None of these proposals have proved to be a practical solution to the problem, due both to the objectionable characteristics which are imparted to the cloth hem, and to the difficulties in devising a mechanism for continuously carrying out periodic cutting, impregnating, and bonding steps in a satisfactory manner. 7

The present invention is concerned with the problem's indicated in connection with forming selvag'es, especially those problems surrounding such operations as cutting and securing a cloth hem with an adhesive type binder, and the invention aims to devise improved methods and apparatus for continuously forming selvages along cloth edges of both straight and curved shape. It is also an objectof the invention to devise a mechanism for rapidly and cheaply carrying out a novel sequence of operations in connection with a cloth hemming operation. Another object of the invention is to provide a mechanism capable of rapidly and efliciently forming a cloth hem which is of sufliciently rugged construction to undergo a great deal of hard usage, such as is encountered in repeated exposure and washings in chemical reagents, and which is, more over, capable of retaining a great deal of its normal textile characteristics. Still another object of the invention is to devise a method of handling hemmed cloth to facilitate folding and inspection operations.

These and other objects and novel features will be more fully understood and appreciated from the following description of preferred embodiments of the invention selected for purposes of illustration and shown in the accompanying drawings, in which Fig. 1 is a view in side elevation of an apparatus for handling a web or rollof cloth from which specialty cloth items are cut oif and provided with one or more selvages and subsequently carried away on a conveyor member;

Fig. 2 is a plan view of the selvage-formingapparatus shownin Fig. 1.;

Fig. 3 is a diagrammatic view indicating. a number of atent '2 operations carried out in the cloth hemming machine and illustrating particularly the timing relationship of the operations with respect to onea'no'th'er;

Fig. 4 is a diagrammatic View showing parts of the cloth hemming machine and illustrating the position of these parts at the beginning of the cycle of operation, generally indicated in Fig. 3;

Fig. 5 is a diagrammatic View, similar to Fig. 4, and illustrating a succeeding step in the cycle of operation referred to and in which a cutting member is moved into an advanced position;

Fig. 6 is a diagrammatic view similar to Figs. 4 and 5 and illustrating still another step in which a former element is moved into cooperative relationship with the cutting member;

Fig. 7 is a diagrammatic view similar to Figs. 4 to 6, inclusive, but showing the former element moved out of engagement with the cutting member to leave folded cloth portions surrounding the cutting member;

Fig. 8 is a similar diagrammatic view showing the cutting member in a retracted position corresponding to the position shown in Fig. 4, and further indicating respective positions assumed by the textile material;

Fig. 9 is an enlarged fragmentary vertical crosssection through the former element and cutting member in a "position such as that shown in Fig. 6, and particularly illustrating the position of these elements in forming a length of cloth into two connected folds;

Fig. 10 is a View similar to Fig. 9 but further illustrating the cutting member advanced beyond its cutting station and also showing a pair of seam setting blocks engaging the'folds of cloth with the blade lying thereb'e'tween;

Fig. 11 is a fragmentary perspective View of a textile material formed with a hemmed edge by the method illustrated'in Figs. 1 to 10,'inclusive;

Fig. 12 is an end elevation'al view of the hemming machine shown in Figs. 1 and 2; v

Fig. 13 is an enlarged fragmentary side elevational view of parts of the mechanism shown in Fig. 1;

Fig. 14 is a vertical cross-section taken on the line l p-14 6f Fig. 12;

Fig. '15 is an enlarged fragmentary plan view of that portion of the naming machine included within the bracket Ain Fig. 2;

Fig. 16is an enlarged plan view of parts of the hemming machine included within the bracket B in Fig. 2;

Fig. 16a is a detail plan view showing parts of the bracket supporting means for the former element;

. 'Fig. 17 is "an enlarged elevational view of portions of the hemmin'g'machine included in the bracket C in Fig. 1 5;

Fig. 18 is 'a cross-sectional view taken on the line l818 of Fig. 17;

Fig. 19 is a cross-sectional view taken on the line 19-19 of Fig. 17;

Fig. 20 is an enlarged fragmentary plan view of certain parts "of the hemming machine included within the bracket D in Fig. 2;

Fig. 21 is a detail cross-sectional view taken on the line 21-21 of Fig. 20;

Fig. 22 is a cross section'al view taken on the line 22- 22 of Fig. 21;

Fig. 23 is a detail cross-sectional view taken on the line -2323 of Fig. 20;

Fig. 24 is a plan view of the fold forming element;

Fig. 25 is a cross-sectional view taken on the line 2525 of Fig. 24;

Fig. 26 is a cross-sectional view taken on the line 26-26 of Fig. 24;

Fig. 27 is a cross-sectional view taken on the line 27- -27 of Fig. 25;

Fig. 28 is a front 'elevational view of a heated seam setting block; 

